body{
	overflow-x: hidden;
}

#product_bg_box{
	height: 120px;
	background:rgba(236,235,233,0.4) ;

}
#product_list{
	position: relative;
	top: -120px;
}
.content{
	background: url(../images/product-bg.png) no-repeat;
	background-size: 100% 100%;
}
.thumbnail{
	background: none;
	border: none;
}
.thumbnail>img{
	width: 211px;
	height: 367px;
}
.student ul{
	display: inline-block;
	width: 510px;
	margin: 0 auto;
}
.student ul li{
	float: left;
	line-height: 120px;
	width: 160px;
	font-size: 36px;
	font-family:微软雅黑;
	cursor: pointer;
}
.main_nav_show{
	background: url(../images/option.png) no-repeat;
	color: white;
}
.thumbnail{
	padding-top: 57px;
	margin-top: 59px;
}
.h_cover{
	width: 390px;
	height: 484px;
}
.h_cover:hover{
	background: #bfc7e9;
	opacity: 0.7;
}

.imgs{
		/*width: 211px;*/
			}
#product_content .product_tab{
	display:none;
}
#product_content .show_tab{
    display: block;
}
.thumbnail>img {
	display: block;
	max-width: 100%;
	height: 367px;
			}

#product_content .product_tab{
	display:none;
}
#product_content .show_tab{
	display: block;
}
/*屏幕小于768px*/
@media (max-width:768px){
	
	#title{
		width: 300px;
	}
	
	#title li{
		width: 90px;
		font-size: 18px;
		background-size: 100% 100%;
	}
	.h_cover{
		width: 360px;
		height: 484px;
	}
	
}
/* 中等屏幕（桌面显示器，大于 768px 小于1200px ） */
@media (min-width: 768px) and (max-width:1200px){
	
}
/*屏幕大于1200px*/
@media (min-width: 1200px){
	
}
